用一年时间对家养条件下各年龄段非洲黑鸵鸟的行为进行了观察。

The behavior of African black domestic Ostriches of different ages was observed in one year.

youdao

用一年时间对家养条件下各年龄段非洲黑鸵鸟的行为进行了观察。

The behavior of African black domestic Ostriches of different ages was observed in one year.

youdao